/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.mycat.memory.unsafe.memory;

import io.mycat.memory.unsafe.memory.mm.DataNodeMemoryManager;
import io.mycat.memory.unsafe.memory.mm.MemoryConsumer;

import java.io.IOException;

public class TestMemoryConsumer extends MemoryConsumer {
  public TestMemoryConsumer(DataNodeMemoryManager memoryManager) {
    super(memoryManager);
  }

  @Override
  public long spill(long size, MemoryConsumer trigger) throws IOException {
    long used = getUsed();
    free(used);
    return used;
  }

  void use(long size) throws InterruptedException {
    long got = dataNodeMemoryManager.acquireExecutionMemory(
      size,
      dataNodeMemoryManager.tungstenMemoryMode,
      this);
    used += got;
  }

  void free(long size) {
    used -= size;
    dataNodeMemoryManager.releaseExecutionMemory(
      size,
      dataNodeMemoryManager.tungstenMemoryMode,
      this);
  }
}


